Lauren Whitman, heiress to the Whitman Group, returns to the country during medical convalescence only to discover her fiancé Evan Brooks, younger brother Miles Whitman and others have been charmed by Fiona Quinn - a woman bearing an uncanny resemblance to her. Using a mysterious 'codebook' that supposedly predicts the future, Fiona conspires with the Brooks family to overthrow the Whitmans. After exposing the betrayal and dramatically calling off her engagement, Lauren fakes her death to set an elaborate trap. Teaming up with Henry Dawson, she thwarts the conspiracy and ultimately finds true love.